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react-native/ReactCommon/cxxreact/JSCExecutor.cpp

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// Copyright 2004-present Facebook. All Rights Reserved.
#include "JSCExecutor.h"
#include <algorithm>
#include <condition_variable>
#include <mutex>
#include <sstream>
#include <string>
#include <glog/logging.h>
#include <folly/json.h>
#include <folly/Memory.h>
#include <folly/String.h>
#include <folly/Conv.h>
#include <sys/time.h>
#include "FollySupport.h"
#include "JSCHelpers.h"
#include "Platform.h"
#include "SystraceSection.h"
#include "Value.h"
#include "JSCSamplingProfiler.h"
#if defined(WITH_JSC_EXTRA_TRACING) || DEBUG
#include "JSCTracing.h"
#endif
#ifdef WITH_JSC_EXTRA_TRACING
#include "JSCLegacyProfiler.h"
#include "JSCLegacyTracing.h"
#include <JavaScriptCore/API/JSProfilerPrivate.h>
#endif
#ifdef WITH_JSC_MEMORY_PRESSURE
#include <jsc_memory.h>
#endif
#ifdef WITH_FB_MEMORY_PROFILING
#include "JSCMemory.h"
#endif
#ifdef WITH_FB_JSC_TUNING
#include <jsc_config_android.h>
#endif
#ifdef JSC_HAS_PERF_STATS_API
#include "JSCPerfStats.h"
#endif
namespace facebook {
namespace react {
namespace {
template<JSValueRef (JSCExecutor::*method)(size_t, const JSValueRef[])>
inline JSObjectCallAsFunctionCallback exceptionWrapMethod() {
struct funcWrapper {
static JSValueRef call(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef *exception) {
try {
auto globalObj = JSContextGetGlobalObject(ctx);
auto executor = static_cast<JSCExecutor*>(JSObjectGetPrivate(globalObj));
return (executor->*method)(argumentCount, arguments);
} catch (...) {
*exception = translatePendingCppExceptionToJSError(ctx, function);
return JSValueMakeUndefined(ctx);
}
}
};
return &funcWrapper::call;
}
}
static JSValueRef nativeInjectHMRUpdate(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef *exception);
std::unique_ptr<JSExecutor> JSCExecutorFactory::createJSExecutor(
std::shared_ptr<ExecutorDelegate> delegate, std::shared_ptr<MessageQueueThread> jsQueue) {
return std::unique_ptr<JSExecutor>(
new JSCExecutor(delegate, jsQueue, m_cacheDir, m_jscConfig));
}
JSCExecutor::JSCExecutor(std::shared_ptr<ExecutorDelegate> delegate,
std::shared_ptr<MessageQueueThread> messageQueueThread,
const std::string& cacheDir,
const folly::dynamic& jscConfig) throw(JSException) :
m_delegate(delegate),
m_deviceCacheDir(cacheDir),
m_messageQueueThread(messageQueueThread),
m_jscConfig(jscConfig) {
initOnJSVMThread();
SystraceSection s("setBatchedBridgeConfig");
folly::dynamic nativeModuleConfig = folly::dynamic::array();
{
SystraceSection s("collectNativeModuleNames");
std::vector<std::string> names = delegate->moduleNames();
for (auto& name : delegate->moduleNames()) {
nativeModuleConfig.push_back(folly::dynamic::array(std::move(name)));
}
}
folly::dynamic config =
folly::dynamic::object
("remoteModuleConfig", std::move(nativeModuleConfig));
SystraceSection t("setGlobalVariable");
setGlobalVariable(
"__fbBatchedBridgeConfig",
folly::make_unique<JSBigStdString>(detail::toStdString(folly::toJson(config))));
setGlobalVariable(
"__fbBatchedBridgeSerializeNativeParams",
folly::make_unique<JSBigStdString>(""));
}
JSCExecutor::JSCExecutor(
std::shared_ptr<ExecutorDelegate> delegate,
std::shared_ptr<MessageQueueThread> messageQueueThread,
int workerId,
JSCExecutor *owner,
std::string scriptURL,
std::unordered_map<std::string, std::string> globalObjAsJSON,
const folly::dynamic& jscConfig) :
m_delegate(delegate),
m_workerId(workerId),
m_owner(owner),
m_deviceCacheDir(owner->m_deviceCacheDir),
m_messageQueueThread(messageQueueThread),
m_jscConfig(jscConfig) {
// We post initOnJSVMThread here so that the owner doesn't have to wait for
// initialization on its own thread
m_messageQueueThread->runOnQueue([this, scriptURL,
globalObjAsJSON=std::move(globalObjAsJSON)] () {
initOnJSVMThread();
installNativeHook<&JSCExecutor::nativePostMessage>("postMessage");
for (auto& it : globalObjAsJSON) {
setGlobalVariable(std::move(it.first),
folly::make_unique<JSBigStdString>(std::move(it.second)));
}
// Try to load the script from the network if script is a URL
// NB: For security, this will only work in debug builds
std::unique_ptr<const JSBigString> script;
if (scriptURL.find("http://") == 0 || scriptURL.find("https://") == 0) {
std::stringstream outfileBuilder;
outfileBuilder << m_deviceCacheDir << "/workerScript" << m_workerId << ".js";
script = folly::make_unique<JSBigStdString>(
WebWorkerUtil::loadScriptFromNetworkSync(scriptURL, outfileBuilder.str()));
} else {
// TODO(9604438): Protect against script does not exist
script = WebWorkerUtil::loadScriptFromAssets(scriptURL);
}
// TODO(9994180): Throw on error
loadApplicationScript(std::move(script), std::move(scriptURL));
});
}
JSCExecutor::~JSCExecutor() {
CHECK(*m_isDestroyed) << "JSCExecutor::destroy() must be called before its destructor!";
}
void JSCExecutor::destroy() {
*m_isDestroyed = true;
m_messageQueueThread->runOnQueueSync([this] () {
terminateOnJSVMThread();
});
}
void JSCExecutor::initOnJSVMThread() throw(JSException) {
SystraceSection s("JSCExecutor.initOnJSVMThread");
#if defined(WITH_FB_JSC_TUNING)
configureJSCForAndroid(m_jscConfig);
#endif
JSClassRef globalClass = nullptr;
{
SystraceSection s("JSClassCreate");
globalClass = JSClassCreate(&kJSClassDefinitionEmpty);
}
{
SystraceSection s("JSGlobalContextCreateInGroup");
m_context = JSGlobalContextCreateInGroup(nullptr, globalClass);
}
JSClassRelease(globalClass);
// Add a pointer to ourselves so we can retrieve it later in our hooks
JSObjectSetPrivate(JSContextGetGlobalObject(m_context), this);
installNativeHook<&JSCExecutor::nativeRequireModuleConfig>("nativeRequireModuleConfig");
installNativeHook<&JSCExecutor::nativeFlushQueueImmediate>("nativeFlushQueueImmediate");
installNativeHook<&JSCExecutor::nativeStartWorker>("nativeStartWorker");
installNativeHook<&JSCExecutor::nativePostMessageToWorker>("nativePostMessageToWorker");
installNativeHook<&JSCExecutor::nativeTerminateWorker>("nativeTerminateWorker");
installGlobalFunction(m_context, "nativeInjectHMRUpdate", nativeInjectHMRUpdate);
installNativeHook<&JSCExecutor::nativeCallSyncHook>("nativeCallSyncHook");
installGlobalFunction(m_context, "nativeLoggingHook", JSNativeHooks::loggingHook);
installGlobalFunction(m_context, "nativePerformanceNow", JSNativeHooks::nowHook);
#if defined(WITH_JSC_EXTRA_TRACING) || DEBUG
addNativeTracingHooks(m_context);
#endif
#ifdef WITH_JSC_EXTRA_TRACING
addNativeProfilingHooks(m_context);
addNativeTracingLegacyHooks(m_context);
PerfLogging::installNativeHooks(m_context);
initSamplingProfilerOnMainJSCThread(m_context);
#endif
#ifdef WITH_FB_MEMORY_PROFILING
addNativeMemoryHooks(m_context);
#endif
#ifdef JSC_HAS_PERF_STATS_API
addJSCPerfStatsHooks(m_context);
#endif
#if defined(WITH_FB_JSC_TUNING)
configureJSContextForAndroid(m_context, m_jscConfig, m_deviceCacheDir);
#endif
}
void JSCExecutor::terminateOnJSVMThread() {
// terminateOwnedWebWorker mutates m_ownedWorkers so collect all the workers
// to terminate first
std::vector<int> workerIds;
for (auto& it : m_ownedWorkers) {
workerIds.push_back(it.first);
}
for (int workerId : workerIds) {
terminateOwnedWebWorker(workerId);
}
JSGlobalContextRelease(m_context);
m_context = nullptr;
}
#ifdef WITH_FBJSCEXTENSIONS
void JSCExecutor::loadApplicationScript(
std::string bundlePath,
std::string sourceURL,
int flags) {
SystraceSection s("JSCExecutor::loadApplicationScript",
"sourceURL", sourceURL);
if ((flags & UNPACKED_JS_SOURCE) == 0) {
throw std::runtime_error("Optimized bundle with no unpacked js source");
}
auto jsScriptBigString = JSBigMmapString::fromOptimizedBundle(bundlePath);
if (jsScriptBigString->encoding() != JSBigMmapString::Encoding::Ascii) {
LOG(WARNING) << "Bundle is not ASCII encoded - falling back to the slow path";
return loadApplicationScript(std::move(jsScriptBigString), sourceURL);
}
String jsSourceURL(sourceURL.c_str());
JSSourceCodeRef sourceCode = JSCreateSourceCode(
jsScriptBigString->fd(),
jsScriptBigString->size(),
jsSourceURL,
jsScriptBigString->hash(),
true);
SCOPE_EXIT { JSReleaseSourceCode(sourceCode); };
evaluateSourceCode(m_context, sourceCode, jsSourceURL);
bindBridge();
flush();
ReactMarker::logMarker("CREATE_REACT_CONTEXT_END");
}
#endif
void JSCExecutor::loadApplicationScript(std::unique_ptr<const JSBigString> script, std::string sourceURL) throw(JSException) {
SystraceSection s("JSCExecutor::loadApplicationScript",
"sourceURL", sourceURL);
#ifdef WITH_FBSYSTRACE
fbsystrace_begin_section(
TRACE_TAG_REACT_CXX_BRIDGE,
"JSCExecutor::loadApplicationScript-createExpectingAscii");
#endif
ReactMarker::logMarker("loadApplicationScript_startStringConvert");
String jsScript = jsStringFromBigString(*script);
ReactMarker::logMarker("loadApplicationScript_endStringConvert");
#ifdef WITH_FBSYSTRACE
fbsystrace_end_section(TRACE_TAG_REACT_CXX_BRIDGE);
#endif
String jsSourceURL(sourceURL.c_str());
evaluateScript(m_context, jsScript, jsSourceURL);
bindBridge();
flush();
ReactMarker::logMarker("CREATE_REACT_CONTEXT_END");
}
void JSCExecutor::setJSModulesUnbundle(std::unique_ptr<JSModulesUnbundle> unbundle) {
if (!m_unbundle) {
installNativeHook<&JSCExecutor::nativeRequire>("nativeRequire");
}
m_unbundle = std::move(unbundle);
}
void JSCExecutor::bindBridge() throw(JSException) {
auto global = Object::getGlobalObject(m_context);
auto batchedBridgeValue = global.getProperty("__fbBatchedBridge");
if (batchedBridgeValue.isUndefined()) {
throwJSExecutionException("Could not get BatchedBridge, make sure your bundle is packaged correctly");
}
auto batchedBridge = batchedBridgeValue.asObject();
m_callFunctionReturnFlushedQueueJS = batchedBridge.getProperty("callFunctionReturnFlushedQueue").asObject();
m_invokeCallbackAndReturnFlushedQueueJS = batchedBridge.getProperty("invokeCallbackAndReturnFlushedQueue").asObject();
m_flushedQueueJS = batchedBridge.getProperty("flushedQueue").asObject();
}
void JSCExecutor::flush() {
auto result = m_flushedQueueJS->callAsFunction({});
try {
auto calls = Value(m_context, result).toJSONString();
m_delegate->callNativeModules(*this, std::move(calls), true);
} catch (...) {
std::string message = "Error in flush()";
try {
message += ":" + Value(m_context, result).toString().str();
} catch (...) {
// ignored
}
std::throw_with_nested(std::runtime_error(message));
}
}
void JSCExecutor::callFunction(const std::string& moduleId, const std::string& methodId, const folly::dynamic& arguments) {
try {
auto result = m_callFunctionReturnFlushedQueueJS->callAsFunction({
Value(m_context, String::createExpectingAscii(moduleId)),
Value(m_context, String::createExpectingAscii(methodId)),
Value::fromDynamic(m_context, std::move(arguments))
});
auto calls = Value(m_context, result).toJSONString();
m_delegate->callNativeModules(*this, std::move(calls), true);
} catch (...) {
std::throw_with_nested(std::runtime_error("Error calling function: " + moduleId + ":" + methodId));
}
}
void JSCExecutor::invokeCallback(const double callbackId, const folly::dynamic& arguments) {
try {
auto result = m_invokeCallbackAndReturnFlushedQueueJS->callAsFunction({
JSValueMakeNumber(m_context, callbackId),
Value::fromDynamic(m_context, std::move(arguments))
});
auto calls = Value(m_context, result).toJSONString();
m_delegate->callNativeModules(*this, std::move(calls), true);
} catch (...) {
std::throw_with_nested(std::runtime_error(folly::to<std::string>("Error invoking callback.", callbackId)));
}
}
void JSCExecutor::setGlobalVariable(std::string propName, std::unique_ptr<const JSBigString> jsonValue) {
try {
SystraceSection s("JSCExecutor.setGlobalVariable",
"propName", propName);
auto globalObject = JSContextGetGlobalObject(m_context);
String jsPropertyName(propName.c_str());
String jsValueJSON = jsStringFromBigString(*jsonValue);
auto valueToInject = JSValueMakeFromJSONString(m_context, jsValueJSON);
JSObjectSetProperty(m_context, globalObject, jsPropertyName, valueToInject, 0, NULL);
} catch (...) {
std::throw_with_nested(std::runtime_error("Error setting global variable: " + propName));
}
}
void* JSCExecutor::getJavaScriptContext() {
return m_context;
}
bool JSCExecutor::supportsProfiling() {
#ifdef WITH_FBSYSTRACE
return true;
#else
return false;
#endif
}
void JSCExecutor::startProfiler(const std::string &titleString) {
#ifdef WITH_JSC_EXTRA_TRACING
JSStringRef title = JSStringCreateWithUTF8CString(titleString.c_str());
#if WITH_REACT_INTERNAL_SETTINGS
JSStartProfiling(m_context, title, false);
#else
JSStartProfiling(m_context, title);
#endif
JSStringRelease(title);
#endif
}
void JSCExecutor::stopProfiler(const std::string &titleString, const std::string& filename) {
#ifdef WITH_JSC_EXTRA_TRACING
JSStringRef title = JSStringCreateWithUTF8CString(titleString.c_str());
facebook::react::stopAndOutputProfilingFile(m_context, title, filename.c_str());
JSStringRelease(title);
#endif
}
void JSCExecutor::handleMemoryPressureUiHidden() {
#ifdef WITH_JSC_MEMORY_PRESSURE
JSHandleMemoryPressure(this, m_context, JSMemoryPressure::UI_HIDDEN);
#endif
}
void JSCExecutor::handleMemoryPressureModerate() {
#ifdef WITH_JSC_MEMORY_PRESSURE
JSHandleMemoryPressure(this, m_context, JSMemoryPressure::MODERATE);
#endif
}
void JSCExecutor::handleMemoryPressureCritical() {
#ifdef WITH_JSC_MEMORY_PRESSURE
JSHandleMemoryPressure(this, m_context, JSMemoryPressure::CRITICAL);
#endif
}
void JSCExecutor::flushQueueImmediate(std::string queueJSON) {
m_delegate->callNativeModules(*this, std::move(queueJSON), false);
}
void JSCExecutor::loadModule(uint32_t moduleId) {
auto module = m_unbundle->getModule(moduleId);
auto sourceUrl = String::createExpectingAscii(module.name);
auto source = String::createExpectingAscii(module.code);
evaluateScript(m_context, source, sourceUrl);
}
int JSCExecutor::addWebWorker(
std::string scriptURL,
JSValueRef workerRef,
JSValueRef globalObjRef) {
static std::atomic_int nextWorkerId(1);
int workerId = nextWorkerId++;
Object globalObj = Value(m_context, globalObjRef).asObject();
auto workerJscConfig = m_jscConfig;
workerJscConfig["isWebWorker"] = true;
std::shared_ptr<MessageQueueThread> workerMQT =
WebWorkerUtil::createWebWorkerThread(workerId, m_messageQueueThread.get());
std::unique_ptr<JSCExecutor> worker;
workerMQT->runOnQueueSync([this, &worker, &workerMQT, &scriptURL, &globalObj, workerId, &workerJscConfig] () {
worker.reset(new JSCExecutor(m_delegate, workerMQT, workerId, this, std::move(scriptURL),
globalObj.toJSONMap(), workerJscConfig));
});
Object workerObj = Value(m_context, workerRef).asObject();
workerObj.makeProtected();
JSCExecutor *workerPtr = worker.get();
std::shared_ptr<MessageQueueThread> sharedMessageQueueThread = worker->m_messageQueueThread;
m_delegate->registerExecutor(
std::move(worker),
std::move(sharedMessageQueueThread));
m_ownedWorkers.emplace(
std::piecewise_construct,
std::forward_as_tuple(workerId),
std::forward_as_tuple(workerPtr, std::move(workerObj)));
return workerId;
}
void JSCExecutor::postMessageToOwnedWebWorker(int workerId, JSValueRef message) {
auto worker = m_ownedWorkers.at(workerId).executor;
std::string msgString = Value(m_context, message).toJSONString();
std::shared_ptr<bool> isWorkerDestroyed = worker->m_isDestroyed;
worker->m_messageQueueThread->runOnQueue([isWorkerDestroyed, worker, msgString] () {
if (*isWorkerDestroyed) {
return;
}
worker->receiveMessageFromOwner(msgString);
});
}
void JSCExecutor::postMessageToOwner(JSValueRef msg) {
std::string msgString = Value(m_context, msg).toJSONString();
std::shared_ptr<bool> ownerIsDestroyed = m_owner->m_isDestroyed;
m_owner->m_messageQueueThread->runOnQueue([workerId=m_workerId, owner=m_owner, ownerIsDestroyed, msgString] () {
if (*ownerIsDestroyed) {
return;
}
owner->receiveMessageFromOwnedWebWorker(workerId, msgString);
});
}
void JSCExecutor::receiveMessageFromOwnedWebWorker(int workerId, const std::string& json) {
Object* workerObj;
try {
workerObj = &m_ownedWorkers.at(workerId).jsObj;
} catch (std::out_of_range& e) {
// Worker was already terminated
return;
}
Value onmessageValue = workerObj->getProperty("onmessage");
if (onmessageValue.isUndefined()) {
return;
}
JSValueRef args[] = { createMessageObject(json) };
onmessageValue.asObject().callAsFunction(1, args);
flush();
}
void JSCExecutor::receiveMessageFromOwner(const std::string& msgString) {
CHECK(m_owner) << "Received message in a Executor that doesn't have an owner!";
JSValueRef args[] = { createMessageObject(msgString) };
Value onmessageValue = Object::getGlobalObject(m_context).getProperty("onmessage");
onmessageValue.asObject().callAsFunction(1, args);
}
void JSCExecutor::terminateOwnedWebWorker(int workerId) {
auto& workerRegistration = m_ownedWorkers.at(workerId);
std::shared_ptr<MessageQueueThread> workerMQT = workerRegistration.executor->m_messageQueueThread;
m_ownedWorkers.erase(workerId);
workerMQT->runOnQueueSync([this, &workerMQT] {
workerMQT->quitSynchronous();
std::unique_ptr<JSExecutor> worker = m_delegate->unregisterExecutor(*this);
worker->destroy();
worker.reset();
});
}
Object JSCExecutor::createMessageObject(const std::string& msgJson) {
Value rebornJSMsg = Value::fromJSON(m_context, String(msgJson.c_str()));
Object messageObject = Object::create(m_context);
messageObject.setProperty("data", rebornJSMsg);
return messageObject;
}
// Native JS hooks
template<JSValueRef (JSCExecutor::*method)(size_t, const JSValueRef[])>
void JSCExecutor::installNativeHook(const char* name) {
installGlobalFunction(m_context, name, exceptionWrapMethod<method>());
}
JSValueRef JSCExecutor::nativePostMessage(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 1) {
throw std::invalid_argument("Got wrong number of args");
}
JSValueRef msg = arguments[0];
postMessageToOwner(msg);
return JSValueMakeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeRequire(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 1) {
throw std::invalid_argument("Got wrong number of args");
}
double moduleId = Value(m_context, arguments[0]).asNumber();
if (moduleId <= (double) std::numeric_limits<uint32_t>::max() && moduleId >= 0.0) {
try {
loadModule(moduleId);
} catch (const std::exception&) {
throw std::invalid_argument(folly::to<std::string>("Received invalid module ID: ", moduleId));
}
} else {
throw std::invalid_argument(folly::to<std::string>("Received invalid module ID: ", moduleId));
}
return JSValueMakeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeRequireModuleConfig(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 1) {
throw std::invalid_argument("Got wrong number of args");
}
std::string moduleName = Value(m_context, arguments[0]).toString().str();
folly::dynamic config = m_delegate->getModuleConfig(moduleName);
return Value::fromDynamic(m_context, config);
}
JSValueRef JSCExecutor::nativeFlushQueueImmediate(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 1) {
throw std::invalid_argument("Got wrong number of args");
}
std::string resStr = Value(m_context, arguments[0]).toJSONString();
flushQueueImmediate(std::move(resStr));
return JSValueMakeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeStartWorker(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 3) {
throw std::invalid_argument("Got wrong number of args");
}
std::string scriptFile = Value(m_context, arguments[0]).toString().str();
JSValueRef worker = arguments[1];
JSValueRef globalObj = arguments[2];
int workerId = addWebWorker(scriptFile, worker, globalObj);
return JSValueMakeNumber(m_context, workerId);
}
JSValueRef JSCExecutor::nativePostMessageToWorker(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 2) {
throw std::invalid_argument("Got wrong number of args");
}
double workerDouble = Value(m_context, arguments[0]).asNumber();
if (workerDouble != workerDouble) {
throw std::invalid_argument("Got invalid worker id");
}
postMessageToOwnedWebWorker((int) workerDouble, arguments[1]);
return JSValueMakeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeTerminateWorker(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 1) {
throw std::invalid_argument("Got wrong number of args");
}
double workerDouble = Value(m_context, arguments[0]).asNumber();
if (workerDouble != workerDouble) {
std::invalid_argument("Got invalid worker id");
}
terminateOwnedWebWorker((int) workerDouble);
return JSValueMakeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeCallSyncHook(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 3) {
throw std::invalid_argument("Got wrong number of args");
}
unsigned int moduleId = Value(m_context, arguments[0]).asUnsignedInteger();
unsigned int methodId = Value(m_context, arguments[1]).asUnsignedInteger();
std::string argsJson = Value(m_context, arguments[2]).toJSONString();
MethodCallResult result = m_delegate->callSerializableNativeHook(
*this,
moduleId,
methodId,
argsJson);
if (result.isUndefined) {
return JSValueMakeUndefined(m_context);
}
return Value::fromDynamic(m_context, result.result);
}
static JSValueRef nativeInjectHMRUpdate(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[], JSValueRef *exception) {
String execJSString = Value(ctx, arguments[0]).toString();
String jsURL = Value(ctx, arguments[1]).toString();
evaluateScript(ctx, execJSString, jsURL);
return JSValueMakeUndefined(ctx);
}
} }
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